Justin Ross Harris, a father who was just found guilty of murdering his toddler son showed no emotion and remained stone cold.

It took a Georgia jury four days to decide that Harris intentionally strapped his little 22-month-old son, Cooper, in a child's seat in a sweltering hot car for seven hours leaving him to die!

"I went to work, as if he wasn't even in the back," Harris originally told investigators right after the incident. "And I probably didn't even hear him because he falls asleep really easily when you drive a car."

But prosecutors presented shocking evidence to the jury, showing that while Cooper was dying, the heartless dad was sending sexual texts to six different women including a minor!

"'I love my son and all, but we both need escapes,'" Cobb County Prosecutor Chuck Boring told the jury in presenting the case. "Those words were uttered 10 minutes before this defendant, with his selfish abandon and malignant heart, did exactly that."

The jury heard testimony from 70 witnesses and sifted through over 1,100 pieces of evidence, including parking lot surveillance video showing Harris tossing light bulbs into his car the day his son died.

And jurors also watched this brief encounter with Cooper's mother, Harris' ex-wife, just hours after the toddler's death.

"I know it was useless, but I tried to save him," an emotionless Harris tells her in the closed circuit meeting.

"I know, baby," she responds.

"It was never, ever in consideration that this was an accident," Boring revealed. "And anybody who could do this, and the evidence showed that he did this intentionally, he has malice in this heart."

Harris faces sentencing on December 5, and perhaps more justice for little Cooper.